1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/mfd/maxim,max5970.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Regulator for MAX5970 Smart Switch from Maxim Integrated
8
9 maintainers:
10 - Patrick Rudolph <patrick.rudolph@9elements.com>
11
12 description: |
13 The smart switch provides no output regulation, but independent fault protection
14 and voltage and current sensing.
15 Programming is done through I2C bus.
16
17 Datasheets:
18 https://datasheets.maximintegrated.com/en/ds/MAX5970.pdf
19 https://datasheets.maximintegrated.com/en/ds/MAX5978.pdf
20
21 properties:
22 compatible:
23 enum:
24 - maxim,max5970
25 - maxim,max5978
26
27 reg:
28 maxItems: 1
29
30 interrupts:
31 maxItems: 1
32
33 leds:
34 type: object
35 description:
36 Properties for four LEDS.
37
38 properties:
39 "#address-cells":
40 const: 1
41
42 "#size-cells":
43 const: 0
44
45 patternProperties:
46 "^led@[0-3]$":
47 $ref: /schemas/leds/common.yaml#
48 unevaluatedProperties: false
49 type: object
50
51 properties:
52 reg:
53 maximum: 3
54
55 additionalProperties: false
56
57 vss1-supply:
58 description: Supply of the first channel.
59
60 vss2-supply:
61 description: Supply of the second channel.
62
63 regulators:
64 type: object
65 description:
66 Properties for both hot swap control/switch.
67
68 patternProperties:
69 "^sw[0-1]$":
70 $ref: /schemas/regulator/regulator.yaml#
71 type: object
72 properties:
73 shunt-resistor-micro-ohms:
74 description: |
75 The value of current sense resistor in microohms.
76
77 required:
78 - shunt-resistor-micro-ohms
79
80 unevaluatedProperties: false
81
82 additionalProperties: false
83
84 required:
85 - compatible
86 - reg
87 - regulators
88 - vss1-supply
89
90 allOf:
91 - if:
92 properties:
93 compatible:
94 enum:
95 - maxim,max5970
96 then:
97 required:
98 - vss2-supply
99
100 additionalProperties: false
101
102 examples:
103 - |
104 i2c {
105 #address-cells = <1>;
106 #size-cells = <0>;
107 regulator@3a {
108 compatible = "maxim,max5978";
109 reg = <0x3a>;
110 vss1-supply = <&p3v3>;
111
112 regulators {
113 sw0_ref_0: sw0 {
114 shunt-resistor-micro-ohms = <12000>;
115 };
116 };
117
118 leds {
119 #address-cells = <1>;
120 #size-cells = <0>;
121 led@0 {
122 reg = <0>;
123 label = "led0";
124 default-state = "on";
125 };
126 led@1 {
127 reg = <1>;
128 label = "led1";
129 default-state = "on";
130 };
131 };
132 };
133 };
134
135 - |
136 i2c {
137 #address-cells = <1>;
138 #size-cells = <0>;
139
140 regulator@3a {
141 compatible = "maxim,max5970";
142 reg = <0x3a>;
143 vss1-supply = <&p3v3>;
144 vss2-supply = <&p5v>;
145
146 regulators {
147 sw0_ref_1: sw0 {
148 shunt-resistor-micro-ohms = <12000>;
149 };
150 sw1_ref_1: sw1 {
151 shunt-resistor-micro-ohms = <10000>;
152 };
153 };
154 };
155 };
156 ...
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